During human digestion, the bolus enters the stomach through the esophagus via the lower esophageal sphincter. the stomach releases proteases and hydrochloric acid, which kills or inhibits bacteria and provides the acidic ph of 2 for the proteases to work. food is churned by the stomach through muscular contractions of the wall called peristalsis and the bolus is converted into chyme. according to the text, the stomach's environment is very acidic. how does this acid stay in the stomach?

Listed in the item bank are some key terms and expressions associated with the categories seen in the venn diagram. to find out more information about items, some have more details available when you click on them. drag and drop each item onto the proper area of the diagram. if an item describes more than one category, be sure to place it in the overlapping space. viruses are tiny infectious pathogens that cause many different diseases, such as polio, and the flu. though they are similar to one celled organisms in some ways, in many ways they are very different. use the venn diagram below to show the similarities and differences between viruses and living organisms.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Describe two recent or ongoing space missions.